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4 commits

Author SHA1 Message Date
Gavrilov Ilia
8e61a8f0c6 calipso: fix memory leak in netlbl_calipso_add_pass() 
[ Upstream commit ec4e9d630a64df500641892f4e259e8149594a99 ]

If IPv6 support is disabled at boot (ipv6.disable=1),
the calipso_init() -> netlbl_calipso_ops_register() function isn't called,
and the netlbl_calipso_ops_get() function always returns NULL.
In this case, the netlbl_calipso_add_pass() function allocates memory
for the doi_def variable but doesn't free it with the calipso_doi_free().

BUG: memory leak
unreferenced object 0xffff888011d68180 (size 64):
  comm "syz-executor.1", pid 10746, jiffies 4295410986 (age 17.928s)
  hex dump (first 32 bytes):
    00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<...>] kmalloc include/linux/slab.h:552 [inline]
    [<...>] netlbl_calipso_add_pass net/netlabel/netlabel_calipso.c:76 [inline]
    [<...>] netlbl_calipso_add+0x22e/0x4f0 net/netlabel/netlabel_calipso.c:111
    [<...>] genl_family_rcv_msg_doit+0x22f/0x330 net/netlink/genetlink.c:739
    [<...>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
    [<...>] genl_rcv_msg+0x341/0x5a0 net/netlink/genetlink.c:800
    [<...>] netlink_rcv_skb+0x14d/0x440 net/netlink/af_netlink.c:2515
    [<...>] genl_rcv+0x29/0x40 net/netlink/genetlink.c:811
    [<...>] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
    [<...>] netlink_unicast+0x54b/0x800 net/netlink/af_netlink.c:1339
    [<...>] netlink_sendmsg+0x90a/0xdf0 net/netlink/af_netlink.c:1934
    [<...>] sock_sendmsg_nosec net/socket.c:651 [inline]
    [<...>] sock_sendmsg+0x157/0x190 net/socket.c:671
    [<...>] ____sys_sendmsg+0x712/0x870 net/socket.c:2342
    [<...>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2396
    [<...>] __sys_sendmsg+0xea/0x1b0 net/socket.c:2429
    [<...>] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46
    [<...>] entry_SYSCALL_64_after_hwframe+0x61/0xc6

Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with Syzkaller

Fixes: cb72d38211ea ("netlabel: Initial support for the CALIPSO netlink protocol.")
Signed-off-by: Gavrilov Ilia <Ilia.Gavrilov@infotecs.ru>
[PM: merged via the LSM tree at Jakub Kicinski request]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 2024-11-18 12:12:25 +01:00
Zheng Yejian
121fd8593a netlabel: remove unused parameter in netlbl_netlink_auditinfo() 
[ Upstream commit f7e0318a314f9271b0f0cdd4bfdc691976976d8c ]

loginuid/sessionid/secid have been read from 'current' instead of struct
netlink_skb_parms, the parameter 'skb' seems no longer needed.

Fixes: c53fa1ed92cd ("netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms")
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: ec4e9d630a64 ("calipso: fix memory leak in netlbl_calipso_add_pass()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
 2024-11-18 12:12:25 +01:00
Andrew Lunn
f8549350ef net: netlabel: Fix kerneldoc warnings 
[ Upstream commit 294ea29113104487a905d0f81c00dfd64121b3d9 ]

net/netlabel/netlabel_calipso.c:376: warning: Function parameter or member 'ops' not described in 'netlbl_calipso_ops_register'

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20201028005350.930299-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: ec4e9d630a64 ("calipso: fix memory leak in netlbl_calipso_add_pass()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
 2024-11-18 12:12:24 +01:00
Gabriel2392
7ed7ee9edf Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00